@article{10_4153_CJM_1977_086_2,
     author = {Atkinson, M. D.},
     title = {On {Rank} 3 {Groups} {Having} \ensuremath{\lambda} = 0},
     journal = {Canadian journal of mathematics},
     pages = {845--847},
     year = {1977},
     volume = {29},
     number = {4},
     doi = {10.4153/CJM-1977-086-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-086-2/}
}